Bee Hive - Varroa Bottom Board - Reducer Entrance - 8 Frame Hive Doctor Base


  • 8 Frame
  • Multiple entrances available
  • Adaptable and functional UV resistant bottom board with a low profile for stability and sturdiness, and multiple entrance options
  • Pest checking trays and other accessories sold separately
  • Vented bottom boards can reduce varroa loading and be utilised as part of a varroa management system.
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Bee Hive - Varroa Bottom Board - Reducer Entrance - 8 Frame Hive Doctor Base

If you are using a white Bottom Board with a white Entrance Reducer, we recommend adding some colour or pattern to the front of the box or bottom board to assist Queens in returning from mating flights - using the multi coloured triple entrance discs will achieve the same result.
  • New and Improved Hive Doctor Entrance Reducer!
  • The Hive Doctor Bar Entrance Reducer slots in front of the Hive Doctor Smart Bottom Board, and can be flipped to either close or reduce the entrance, and stored in the front holding slot.
  • The new removable tabs allow you to control the size of the entrance, providing you with a fully customized entry ranging from 8mm to 50mm once all tabs are removed.
  • Straight sides and ends for easy palletising, and strapping multiple hives.
  • Screw holes for securing to pallets.
  • Locator slots through centre of base for Emlock hive strappers.
  • Locating lugsto secure your hive box, and rigid design to prevent bowing
  • Universal entrance space to allow future functionality, eg. pollen traps, varroa control, and other wasp control.
  • Deep floor with great venting (21% ventilation), with the ability for venting to be closed off with pest trays.
  • Triple disk entrance for a choice of entrance options available seperately here
  • Available in 8 Frame or 10 Frame
  • Pest checking trays available separately here. 10 Frame Smart Bottom Boards require 2 x Pest checking trays
  • Dimensions: 53 x 40.5 x 5cm

Vented bottom boards can reduce varroa loading and be utilised as part of a varroa management system.

  • The mechanism does not actively treat mites but takes advantage of natural mite fall.
  • Modelling has shown Varroa control with venting can be up to 30% over the course of a year. This control does not work in isolation and needs to be used with other treatment options.
  • It is estimated that 20% of phoretic mites fall off the bee in their first 72 hours.
  • With vented bottom boards, mites that fall off the bees fall out of the hive, as opposed to solid floors where the mites can climb back up from the floor and reattach themselves to the bee.
  • This reduction may seem small, but it will decrease the varroa stress load on the hive.
  • This may be particularly beneficial when mite treatments cannot be applied E.g. long summer honey flows.
  • Modeling has shown that through the period between two synthetic treatments mite drop through vented bottom boards can lead to a reduction of up to a third in phoretic mites.

Reduced mite loadings lead to healthier hives, colonies under less mite stress, reduced PMS and reduced hive losses.

Keep in mind that this is no substitute for high efficacy synthetic or organic treatments. Mite levels should be monitored and treated accordingly.

Research on vented boards reducing varroa mites can be viewed here

For more information click here to download our Instruction Guide.

About the Smart Bottom Board

Original / Smart Bottom Board Comparison

NOTE: When using pollen patties, place patties carefully on the top bars of the hive, ensuring no pieces fall through to the bottom board. As with any food product, these pieces may attract rodents which could result in damage to the hive.

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Ecrotek delivers within Australia using Standard Courier delivery services for small orders. Orders exceeding 0.5m³ will be sent using Premium Courier delivery services. If your online order exceeds the small parcel size, you need a separate freight quote - see below.

Goods are delivered on business days only. We cannot deliver on weekends or public holidays.

Signature on Delivery Required

We must get a signature when your order is delivered; we recommend you provide a delivery address where someone can receive and sign for your order. If no one is at your delivery address, the courier company will leave you a card in your letter box advising you of collection details.

All prices displayed on our website are in Australian Dollars ($AUD) and will be charged in Australian Dollars at the checkout

Postage Delivery Times

Urban Rural
Standard Courier 3-6working days* 4-7 working days*
Premium Courier 2-3 working days* 3-5 working days*
  • All orders include tracking.
  • Delivery may be delayed during peak season.

*Dependent upon payment confirmation and stock availability.


Once your order is shipped you will receive an email confirming your shipping details and tracking number.

If you have an account with Ecrotek you can also view the status of your order online when you log into your account.

Flat rate shipping offers

To view our terms and conditions for our flat rat shipping offer click  here.

Order Support and Further Information

If there is a problem with your order or you would like further information about postage and deliveries, please contact us with your order details (and number):

Australian customers:

T: 1800 905 687

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